a message from the u.s. department of health and human services. >> it's a sport that has a kickoff, but it's not football. it has a pitch, but it's not baseball. it has goals, but it's not soccer. and it has teams that are guys or all girls, but as emily tells us, that's changing. >> it all started about 200 years ago in england. a guy playing soccer decided he wouldn't just kick the ball. he'd carry it as he ran. so you say, "oh, like american football?" well, not exactly. >> the big difference between american football and rugby football is there's no forward pass in rugby. the ball has to be passed laterally... >> that means passing to the side. >> ...or slightly behind you. >> rugby is played on a field called the pitch. to score, you have to get the ball across the try line. >> one of the key pieces is, every player on the field gets a chance to actually run with the ball, touch the ball, and move with the ball. so it's really a good feel-good sport for everyone involved. >> girls and boys have been pl